External Isdn Ports (S External) - Aastra OpenCom 510 User Manual

Interfaces and Connectible Terminals
1. Remove the interface card by following the instructions in Installing Interface
Cards starting on page 31.
2. The DIP switches are protected by a plastic foil. Use a pointed tool such as a
screwdriver to slide the DIP switches down (see arrow in the illustration
MX+S01-8: Terminating resistors deactivated).
OpenCom 510
TR
IAE
MX+S01-8: Terminating resistors deactivated
Both ends of the S
resistors must be deactivated (DIP switches set to "1 2").
5.2.2 External ISDN Ports (S
You can connect the OpenCom 510 to the NTBA or to a second OpenCom 510 for
PBX cascading.
To connect the OpenCom 510 to the NTBA, wire pins 3, 4, 5, 6 of the NTBA and of
the OpenCom 510 1:1.
To directly connect two OpenCom 510 systems via the external S
the RJ45 sockets of the systems by means of a crossed twisted-pair cable. The dis-
tance between the two PBXs must not exceed 1000 metres (see also PBX Net-
working starting on page 140).
TR
IAE
bus are terminated by terminating resistors; the terminating
0
External)
0
S Ports
0
ports, connect
0
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